From: Błażej Szczygieł mumei6102@gmail.com
commit a9386ee9681585794dbab95d4ce6826f73d19af6 upstream.
Always setup overdrive tables after resume. Preserve only some user-defined settings in user_overdrive_table if they're set.
Copy restored user_overdrive_table into od_table to get correct values.
On cold boot, BTC was triggered and GfxVfCurve was calibrated. We got VfCurve settings (a). On resuming back, BTC will be triggered again and GfxVfCurve will be recalibrated. VfCurve settings (b) got may be different from those of cold boot. So if we reuse those VfCurve settings (a) got on cold boot on suspend, we can run into discrepencies.
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1897 Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2276 Reviewed-by: Evan Quan evan.quan@amd.com Signed-off-by: Błażej Szczygieł mumei6102@gmail.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 43 ++++++++++++---- 1 file changed, 33 insertions(+), 10 deletions(-)
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c @@ -2143,16 +2143,9 @@ static int sienna_cichlid_set_default_od (OverDriveTable_t *)smu->smu_table.boot_overdrive_table; OverDriveTable_t *user_od_table = (OverDriveTable_t *)smu->smu_table.user_overdrive_table; + OverDriveTable_t user_od_table_bak; int ret = 0;
- /* - * For S3/S4/Runpm resume, no need to setup those overdrive tables again as - * - either they already have the default OD settings got during cold bootup - * - or they have some user customized OD settings which cannot be overwritten - */ - if (smu->adev->in_suspend) - return 0; - ret = smu_cmn_update_table(smu, SMU_TABLE_OVERDRIVE, 0, (void *)boot_od_table, false); if (ret) { @@ -2163,7 +2156,23 @@ static int sienna_cichlid_set_default_od sienna_cichlid_dump_od_table(smu, boot_od_table);
memcpy(od_table, boot_od_table, sizeof(OverDriveTable_t)); - memcpy(user_od_table, boot_od_table, sizeof(OverDriveTable_t)); + + /* + * For S3/S4/Runpm resume, we need to setup those overdrive tables again, + * but we have to preserve user defined values in "user_od_table". + */ + if (!smu->adev->in_suspend) { + memcpy(user_od_table, boot_od_table, sizeof(OverDriveTable_t)); + smu->user_dpm_profile.user_od = false; + } else if (smu->user_dpm_profile.user_od) { + memcpy(&user_od_table_bak, user_od_table, sizeof(OverDriveTable_t)); + memcpy(user_od_table, boot_od_table, sizeof(OverDriveTable_t)); + user_od_table->GfxclkFmin = user_od_table_bak.GfxclkFmin; + user_od_table->GfxclkFmax = user_od_table_bak.GfxclkFmax; + user_od_table->UclkFmin = user_od_table_bak.UclkFmin; + user_od_table->UclkFmax = user_od_table_bak.UclkFmax; + user_od_table->VddGfxOffset = user_od_table_bak.VddGfxOffset; + }
return 0; } @@ -2373,6 +2382,20 @@ static int sienna_cichlid_od_edit_dpm_ta return ret; }
+static int sienna_cichlid_restore_user_od_settings(struct smu_context *smu) +{ + struct smu_table_context *table_context = &smu->smu_table; + OverDriveTable_t *od_table = table_context->overdrive_table; + OverDriveTable_t *user_od_table = table_context->user_overdrive_table; + int res; + + res = smu_v11_0_restore_user_od_settings(smu); + if (res == 0) + memcpy(od_table, user_od_table, sizeof(OverDriveTable_t)); + + return res; +} + static int sienna_cichlid_run_btc(struct smu_context *smu) { int res; @@ -4400,7 +4423,7 @@ static const struct pptable_funcs sienna .set_soft_freq_limited_range = smu_v11_0_set_soft_freq_limited_range, .set_default_od_settings = sienna_cichlid_set_default_od_settings, .od_edit_dpm_table = sienna_cichlid_od_edit_dpm_table, - .restore_user_od_settings = smu_v11_0_restore_user_od_settings, + .restore_user_od_settings = sienna_cichlid_restore_user_od_settings, .run_btc = sienna_cichlid_run_btc, .set_power_source = smu_v11_0_set_power_source, .get_pp_feature_mask = smu_cmn_get_pp_feature_mask,